Improvement in snow-plows



H. TwlTcHELL el Gf E, 'PARsuNsf Snow-Plow.

Nvo, 159,865, Patented Feb.16,1a75.

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THE GRAPHIC C0.PHDTO.LITH39&41 PARK PLACE HAY.

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HENRY TWITOHELL AND GEORGE E. PARSONS, OF PULASKI, NEWr YORK.

IMPROVEMENT IN SNOW-FLOWS.

Specification forming part of Letters Patent No. 159,866, dated February16, 1875 application filed March 12, 1873.

To all whom it may concern:

Be it known that we, H. TWITGHELL and G. E. PARsoNs, of Pulaski, in thecounty of Oswego and State of New York, have invented a new and valuableImprovement in Railroad Snow-Flows; and we do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawingsmaking a part of this specification, and to the letters and figures ofreference thereon.

Figure 1 of the drawing is a representation of a longitudinal verticalsection. Fig. 2 is a side View of the invention.

Our invention has relation to snow-plows; and the novelty consists inthe employment of an inclined plane provided with perpendicular sides,up which the snow is made to pass to a horizontal plane, where it isdivided by two inclined plates or surfaces, between which andsimilarly-inclined surfaces, forming parts of the vertical sides of theinclined plane, chutes are formed, through which the snow is forced, inthe forward movement of the car, backward and outward from the tracks,so that there will be no liability of the snow falling back upon thetracks by its gravity, as hereinafter more fully set forth.

ln the accompanying drawings, A A are the sides of the plow, connectedtogether by the transverse pieces b b. The forward end O of the plow isinclined. D D are vertical plates, preferably made of boiler-iron,attached to the sides of the plow, the front edges o o of which serve todivide the snow which is carried up the chute, having for its sides thevertical plates D D, and for its base or bottom the inclined plane O.The upper part of the inclined plane O terminates in a horizontal plane,H, which projects on each side over the sides A A of the plow. E E aresecurely attached to the horizontal plate H of the plow, intersectingeach other near the forward end of the horizontal plane, and aboutmidway between the sides D D. The forward end of the line ofintersection s is curved, as are also the upper edges of the mold-boardsE E. The rear upper ends of the surfaces D D are inclined outwardly, asseen atm, chutes being thus formed between the surfaces E E and m m,having for their bottom or bases the horizontal plane H, made to projectbeyond the sides of the plow. The whole outer surface of the plow ispreferably covered with boiler-iron.

The operation of our improved snow-plow attached to a locomotive is asfollows: The iront edge of the inclined plane rests upon the tracks, thesides D D projecting a short distance beyond the tracks. ln the forwardmovement of the plow the snow is divided and carried up the inclinedplane, there being no obstruction to its passage. When the snow reachesthe upper end of the inclined plane O it is brought upon the top orhorizontal part of the top of the plow, where it is divided by theinclined cutter s, and carried in opposite directions in the chutes,rearward and outward, clear of the tracks.

It will be seen by our construction that the snow is densely packed inthe chutes, and is carried well away from the tracks, so that there willbe no liability ot' the snow thrown off the plow falling by gravity backon the tracks.

We are aware that a snow-plow has hereto- What we claim as ourinvention, and desire` to secure by Letters Patent, is

The combination, in a snow-plow, of the inclinedv plane O, mold-boards EE, having dividing-cutter s, and vertical sides D D, providedwithcontinuous inclined surfaces m fm., made in one piece, and verticalsides D D, and cutters o o, substantially as and for the purposes setforth.

HENRY TWITOHELL. GEORGE E. PARSONS.

Witnesses:

J AMES W. FEN'roN, ROBERT D. GILLESPIE.

